Tri-fluted vascular access needle
AssigneeCook Medical Technologies LLC
InventorsKenneth A. Haselby, Sara M. Sherman, Charles Baxter, Richard Hadley, Keith Milner
Life of this patent
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Abstract
A needle disclosed herein may include an elongate body extending between a proximal end and a distal end with a central longitudinal axis defined by the body, where the distal end includes a single sharp point along the central longitudinal axis and defining a distal end terminus three longitudinal fluted surfaces converging at the distal end terminus; and three longitudinal beveled cutting edges defining borders between the fluted surfaces and converging at the distal end terminus. Needle embodiments may include one or more ports open into and/or proximal of the fluted surfaces and communicating with one or more longitudinal needle lumens.
Claims19
A vascular access needle, comprising:
- an elongate body extending between a proximal end and a distal end;
- and a central longitudinal axis defined by the body;
- where the distal end includes:
- as single sharp point along the central longitudinal axis and defining a distal end terminus;
- three longitudinal fluted surfaces converging at the distal end terminus;
- three longitudinal beveled cutting edges defining borders between the fluted surfaces and converging at the distal end terminus;
- where the three longitudinal beveled cutting edges are all symmetrical to each other;
- and
- at least a first port open from at least a first of the three longitudinal fluted surfaces to a first needle lumen.
A needle, comprising;
- a distal metallic body extending from a sharply pointed distal terminus;
- a central longitudinal axis defined by the body;
- where the distal terminus is disposed along the central longitudinal axis and is formed by convergence of three longitudinal fluted surfaces and three longitudinal beveled cutting edges defining borders between the fluted surfaces;
- where the three longitudinal beveled cutting edges each include a distalmost angle relative to the central longitudinal axis of about 7° to about 15°;
- and where the three longitudinal beveled cutting edges are all symmetrical to each other;
- a cannula extending from a proximal end of the distal metallic body;
- and
- at least a first port open from at least a first of the three longitudinal, fluted surfaces to a first needle lumen.
Dependencies are inferred from the claim text.